<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>模板页面</title>
    <style>
        h1 {
            color: blue;
        }
    </style>
</head>

<body>
    <h1>一级标题</h1>
    <h2>二级标题</h2>
    <h3>三级标题</h3>
    <ul>
        <li>列表信息
            <ul>
                <li>二级列表
                    <ul>
                        <li>三级列表</li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>

</body>

</html>